com.googlecode.objectify.condition

Interface If<V,P>

All Known Implementing Classes:

Always, IfDefault, IfEmpty, IfEmptyString, IfFalse, IfNotDefault, IfNotEmpty, IfNotNull, IfNotZero, IfNull, IfTrue, IfZero, PojoIf, ValueIf

public interface If<V,P>

A simple interface that defines a condition test for a field value or whole entity. For example, you could have a class that tests against null values called IfNull. This interface is used by the @IgnoreSave, @Index, and @Unindex annotations.

The matching engine will call both methods; if either return true the condition is considered true.

All implementations of this interface will be created with ObjectifyFactory.construct(). If the implementation also implements the InitializeIf interface, the init() method will be called immediately after construction.

Author:

Jeff Schnitzer

See Also:

InitializeIf, ObjectifyFactory.construct(Class)

Method Summary

Modifier and Type	Method and Description
boolean	matchesPojo(P pojo) Override this method to test a whole pojo for your condition.
boolean	matchesValue(V value) Test a simple property value.

Method Detail

matchesValue

boolean matchesValue(V value)

Test a simple property value.

Parameters:

value - is the actual value of a particular field

Returns:

true if the value matches the condition defined by an instance of this interface.

matchesPojo

boolean matchesPojo(P pojo)

Override this method to test a whole pojo for your condition. The pojo might be an entity or an embedded class object - whichever holds the field being tested.

Parameters:

pojo - is the entity object on which the field/value exists

Returns:

true if the value matches the condition defined by an instance of this interface.